CN115780991A - Steel grating plate fixed-position welding device - Google Patents
Steel grating plate fixed-position welding device Download PDFInfo
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- CN115780991A CN115780991A CN202310020733.0A CN202310020733A CN115780991A CN 115780991 A CN115780991 A CN 115780991A CN 202310020733 A CN202310020733 A CN 202310020733A CN 115780991 A CN115780991 A CN 115780991A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention belongs to the technical field of grid plate welding, and particularly relates to a steel grid plate positioning welding device which comprises a rack, wherein a pressing welding head capable of moving in a three-axis mode is arranged above the rack, a gathering component is arranged at the top of the rack, a plurality of clamping mechanisms distributed in a matrix mode are arranged on the gathering component, the clamping mechanisms clamp a transverse rod and a longitudinal rod and enable the transverse rod to be perpendicular to the longitudinal rod, the gathering component comprises two first push plates and two second push plates which are distributed in a rectangular mode, the two first push plates and the two second push plates are distributed in a staggered mode, and the two first push plates and the two second push plates which are close to each other enable the transverse rods to be flush with the end portions of the longitudinal rods. According to the invention, the longitudinal rods and the transverse rods forming the steel grating are clamped by the clamping mechanism, the longitudinal rods and the transverse rods can be kept in vertical arrangement, and then the vertical intersection points of the transverse rods and the longitudinal rods are welded by the pressure welding head, so that the whole welding process does not need manual work, and the welding speed is effectively improved.
Description
Technical Field
The invention relates to the technical field of grating plate welding, in particular to a steel grating plate positioning welding device.
Background
The grating plate is a partition plate which is made by cross arrangement of vertical rods and transverse rods according to a certain distance and is provided with square lattices in the middle; the steel ladder is mainly used as a ditch cover plate, a steel structure platform plate, a step plate of a steel ladder and the like. At present, the commonly used grid plates are generally formed by welding steel bars or flat steels by a press welder into a square grid-shaped structure, and for example, a grid plate is disclosed in the patent number CN 206093488U.
However, the welding of horizontal pole and montant among the above-mentioned patent needs manual operation to make and keeps the same interval between each horizontal pole and each montant together to need artifical continuous adjustment in the middle of the welding process, it is hard and time consuming to operate, also influences welded speed simultaneously, for this reason, provides a steel grating board fixed-position welding device.
Disclosure of Invention
The invention provides a positioning welding device for steel grating plates, aiming at solving the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a steel grating board fixed-position welding device, includes the rack, the top of rack is equipped with the pressure welding head that the triaxial removed, the top of rack is installed and is gathered together the subassembly, gather together and install a plurality of fixture that are the matrix and distribute on the subassembly, fixture passes through centre gripping horizontal pole and vertical pole and makes horizontal pole and vertical pole perpendicular setting, gather together the subassembly including two push pedal one and two push pedal two that are the rectangle and distribute, two push pedal one and two crisscross distributions of push pedal two, two push pedal one and two push pedal two that are close to each other will make the tip parallel and level of a plurality of horizontal poles and a plurality of vertical poles.
Preferably, vertical electronic sharp module is installed to the bottom of rack, fixed mounting has the frame on the slider of vertical electronic sharp module, fixed mounting has horizontal electronic sharp module in the frame, fixed mounting has vertical electronic sharp module on the slider of horizontal electronic sharp module, the pressure welding head and the slider fixed connection on the vertical electronic sharp module.
Preferably, gather together the subassembly include with rack fixed connection's platen, the slidable mounting that runs through the formula on the platen has the panel, a plurality of recesses that the matrix distributes are seted up at the top of panel, and a plurality of fixture install respectively in the recess that corresponds, the bottom fixed mounting of platen has two telescopic cylinders of symmetric distribution, and the piston rod top of two telescopic cylinders all with panel fixed connection.
Preferably, eight through holes I that are the matrix and distribute are seted up at the top of platen, be equipped with drive mechanism in the through hole I, drive mechanism include with a both sides inner wall fixed connection's of through hole guide arm, the cover is equipped with slider one on the guide arm, the bottom of push pedal one and push pedal two respectively with two slider top fixed connection that correspond, the cover that slides on the guide arm is equipped with the spring, the both ends of spring respectively with the inner wall and a slider fixed connection of through hole I.
Preferably, the traction mechanism further comprises a rack fixed on the side portion of the panel and a wheel carrier fixed at the bottom of the bedplate, a reel is rotatably mounted on the wheel carrier, a pull rope is wound on the reel, two ends of the pull rope are fixedly connected with the reel and a first sliding block respectively, one end of the reel extends out of the reel and is fixedly provided with a first gear, and the first gear is meshed with the rack.
Preferably, a rectangular through hole is formed in the platen, the outer side of the panel is connected with the inner wall of the rectangular through hole in a sliding mode, and a rectangular groove for allowing the racks to pass through is formed in the inner wall of the rectangular through hole.
Preferably, fixture include with panel top recess fixed connection's circle piece, the top of circle piece is less than the top of panel, slidable mounting has four arm lock that are square distribution on the circle piece.
Preferably, set up four through hole two that are square distribution on the disk, rotate on the both sides inner wall of through hole two and install same lead screw, the thread bush is equipped with slider two on the lead screw, slider two and the both sides inner wall sliding connection of through hole two, and two tops of slider and the arm lock bottom fixed connection that corresponds, the centre of a circle department of disk has seted up the circular slot, and the one end that a plurality of lead screws are close to each other all extends to the circular slot in, and the equal fixed mounting of one end that a plurality of lead screws are close to each other has gear two, fixed mounting has the motor in the circular slot, the output fixed mounting of motor has the terminal surface fluted disc, and a plurality of gear two all are in the same place with the meshing of terminal surface fluted disc.
Preferably, one side of the clamping arm close to the circle center of the round block is provided with two slope surfaces which are symmetrically distributed, and a plurality of rollers which are linearly distributed are installed on the slope surfaces in an embedded type rotating mode.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the vertical rods and the transverse rods forming the steel grating are clamped by the clamping mechanism, the vertical rods and the transverse rods can be kept to be vertically arranged, and then the vertical intersection points of the transverse rods and the vertical rods are welded by the pressure welding head, so that the whole welding process does not need manual work, and the welding speed is effectively improved;
2. the panel is driven to move downwards, so that the clamping mechanisms can be driven to move downwards, the clamping mechanisms can be easily moved to the position below the steel grating formed by welding the transverse rods and the longitudinal rods after the transverse rods and the longitudinal rods clamped by the clamping mechanisms are loosened, and then the steel grating can be easily taken down from the bedplate;
3. in the process of moving the panel upwards, the two first push plates and the two second push plates are close to each other, so that the cross rods are flush with the ends of the longitudinal rods, and the cross rods and the ends of the longitudinal rods can be clamped and fixed; and after the panel moves down, the two first push plates and the two second push plates are away from each other, so that the welded steel grating can be conveniently taken out from between the two first push plates and the two second push plates.
Drawings
FIG. 1 is a schematic view of the overall structure of a positioning and welding device for steel grating plates according to the present invention;
FIG. 2 is a schematic view of another orientation structure of a positioning welding device for steel grating plates according to the present invention;
FIG. 3 is a schematic structural view of a gathering assembly in a steel grating plate tack welding device according to the present invention;
FIG. 4 is a side cross-sectional view of a gathering assembly in a steel grating plate tack welding apparatus according to the present invention;
FIG. 5 is an enlarged view of the portion A in FIG. 4;
FIG. 6 is a schematic structural view of a clamping mechanism in the steel grating plate tack welding device according to the present invention;
FIG. 7 is a partial cross-sectional side view of a clamping mechanism of a steel grating plate tack welding apparatus according to the present invention;
FIG. 8 is a schematic structural view of a clamping arm in the positioning and welding device for steel grating plates according to the present invention;
fig. 9 is a schematic structural view of a clamping mechanism clamping a cross bar and a longitudinal bar in a positioning welding device for steel grating plates according to the present invention.
In the figure: 1. a rack; 2. a longitudinal electric linear module; 3. a frame; 4. a transverse electric linear module; 5. a vertical motorized linear module; 6. pressing a welding head; 7. a gathering assembly; 71. a platen; 711. a first through hole; 72. a panel; 73. pushing a first plate; 74. a second push plate; 75. a telescopic cylinder; 76. a traction mechanism; 761. a guide bar; 762. a first sliding block; 763. a wheel carrier; 764. a reel; 765. a pull cable; 766. a first gear; 767. a rack; 768. a spring; 8. a clamping mechanism; 81. a round block; 82. clamping arms; 821. a slope surface; 822. a roller; 83. a second through hole; 84. a second sliding block; 85. a screw rod; 86. a second gear; 87. a motor; 88. an end face fluted disc; 89. a circular groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 9, the present invention provides a technical solution: the utility model provides a steel grating board fixed-position welding device, including rack 1, the top of rack 1 is equipped with the bonding tool 6 that the triaxial removed, the top of rack 1 is installed and is gathered together subassembly 7, gather together and install a plurality of fixture 8 that are the matrix and distribute on the subassembly 7, fixture 8 passes through centre gripping horizontal pole and vertical pole and makes horizontal pole and vertical pole set up perpendicularly, gather together subassembly 7 including two push pedal one 73 and two push pedal two 74 that are the rectangle and distribute, two push pedal one 73 and two push pedal two 74 distribute in a staggered way, two push pedal one 73 and two push pedal two 74 that are close to each other will make the tip parallel and level of a plurality of horizontal poles and a plurality of vertical poles.
Furthermore, the two first push plates 73 are positioned between the two second push plates 74, when the two first push plates 73 and the two second push plates 74 are gathered together, the distance between the two second push plates 74 is equal to the length of the cross rod, and the distance between the two first push plates 73 is equal to the length of the longitudinal rod.
Vertical electronic sharp module 2 is installed to the bottom of rack 1, and fixed mounting has frame 3 on vertical electronic sharp module 2's the slider, and fixed mounting has horizontal electronic sharp module 4 in the frame 3, and fixed mounting has vertical electronic sharp module 5 on horizontal electronic sharp module 4's the slider, and the slider fixed connection on pressure welding head 6 and the vertical electronic sharp module 5.
Further, can drive frame 3 through vertical electronic sharp module 2 and carry out longitudinal movement, and frame 3 can drive horizontal electronic sharp module 4 lateral shifting, and vertical electronic sharp module 5 can drive bonding tool 6 and carry out the removal of vertical direction, finally through frame 3, horizontal electronic sharp module 4 and vertical electronic sharp module 5 cooperation then can make bonding tool 6 carry out triaxial removal for bonding tool 6's welding range can be wider.
Gather together subassembly 7 including with rack 1 fixed connection's platen 71, the slidable mounting who runs through the formula on platen 71 has panel 72, and a plurality of recesses that the matrix distributes are seted up to panel 72's top, and a plurality of fixture 8 are installed respectively in the recess that corresponds, and platen 71's bottom fixed mounting has two telescopic cylinder 75 of symmetric distribution, and two telescopic cylinder 75's piston rod top all is with panel 72 fixed connection.
Eight first through holes 711 distributed in a matrix form are formed in the top of the bedplate 71, a traction mechanism 76 is arranged in the first through holes 711, the traction mechanism 76 comprises guide rods 761 fixedly connected with the inner walls of the two sides of the first through holes 711, first sliders 762 are slidably sleeved on the guide rods 761, the bottom ends of the first push plates 73 and the second push plates 74 are respectively fixedly connected with the tops of the corresponding two first sliders 762, springs 768 are slidably sleeved on the guide rods 761, and two ends of the springs 768 are respectively fixedly connected with the inner walls of the first through holes 711 and the first sliders 762.
The traction mechanism 76 further comprises a rack 767 fixed on the side of the panel 72 and a wheel frame 763 fixed on the bottom of the bedplate 71, wherein a reel 764 is rotatably mounted on the wheel frame 763, a pull cable 765 is wound on the reel 764, two ends of the pull cable 765 are fixedly connected with the reel 764 and a first slide block 762 respectively, one end of the reel 764 extends out of the reel 764 and is fixedly mounted with a first gear 766, and the first gear 766 is meshed with the rack 767.
The platen 71 is provided with a rectangular through opening, the outer side of the panel 72 is slidably connected with the inner wall of the rectangular through opening, and the inner wall of the rectangular through opening is provided with a rectangular groove for the plurality of racks 767 to pass through.
The clamping mechanism 8 comprises a round block 81 fixedly connected with the groove in the top of the panel 72, the top of the round block 81 is lower than the top of the panel 72, and four clamping arms 82 which are distributed in a square shape are slidably mounted on the round block 81.
Set up four through hole two 83 that are square distribution on the circle piece 81, it installs same lead screw 85 to rotate on the both sides inner wall of through hole two 83, the threaded bush is equipped with slider two 84 on the lead screw 85, the both sides inner wall sliding connection of slider two 84 and through hole two 83, because the both sides of slider two 84 support and lean on the inner wall of through hole two 83, can prevent that the condition that rocks from appearing in slider two 84, consequently, it is smooth and easy more to make slider two 84 gliding in through hole two 83, and slider two 84 tops and the arm lock 82 bottom fixed connection that corresponds, the circular slot 89 has been seted up to the centre of a circle department of circle piece 81, the one end that a plurality of lead screws 85 are close to each other all extends to the circular slot 89 in, and the equal fixed mounting of one end that a plurality of lead screws 85 are close to each other has gear two 86, fixed mounting has motor 87 in the circular slot 89, motor 87's output fixed mounting has terminal surface fluted disc 88, a plurality of gear two 86 all mesh together with terminal surface fluted disc 88.
Two slope surfaces 821 which are symmetrically distributed are arranged on one side of the clamping arm 82 close to the circle center of the round block 81, and a plurality of rollers 822 which are linearly distributed are installed on the slope surfaces 821 in an embedded type rotating mode.
Further, the slope of the slope 821 is 45 °, so that after the two clipping arms 82 clip the cross rod and the longitudinal rod, the slope 821 can be flush with the cross rod and the longitudinal rod, and because the slope 821 is rotatably installed with a plurality of rollers 822, the longitudinal rod and the cross rod can be more smoothly placed between the two slope 821 arranged in parallel.
In this embodiment: when the clamping mechanism is used, the panel 72 is pulled to move through the two telescopic cylinders 75, the top of the panel 72 is flush with the bottom edge of the rectangular through opening on the bedplate 71, and the distance between two adjacent clamping arms 82 on the plurality of clamping mechanisms 8 is slightly larger than the thickness of the transverse rod and the longitudinal rod;
then, a plurality of transverse rods are placed on a plurality of transversely arranged clamping mechanisms 8, the transverse rods are in contact with four clamping arms 82 on the clamping mechanisms 8, a plurality of longitudinal rods are placed on a plurality of longitudinally arranged clamping mechanisms 8, the longitudinal rods are in contact with the four clamping arms 82 on the clamping mechanisms 8, the plurality of longitudinal rods are located above the plurality of transverse rods, and the bottoms of the longitudinal rods are in contact with the tops of the transverse rods;
then, the two telescopic cylinders 75 push the panel 72 to move upwards, the top of the panel 72 is flush with the top of the bedplate 71, in the process of moving the panel 72 upwards, the rack 767 moving upwards drives the first gear 766 to rotate, the first gear 766 drives the reel 764 to rotate, the reel 764 winds the cable 765 in the rotating process, the first slide block 762 is driven by the cable 765 to be close to the panel 72 in the winding process, the two first push plates 73 and the two second push plates 74 are close to and gather together with the first slide blocks 762 close to the panel 72, the two first push plates 73 and the two second push plates 74 abut against the ends of the transverse rods and the longitudinal rods with the gathering of the two first push plates 73 and the two second push plates 74, and finally the transverse rods are flush with the ends of the longitudinal rods;
then, the control motor 87 drives the end face fluted disc 88 to rotate, the end face fluted disc 88 drives the plurality of second gears 86 to rotate, the second gears 86 drive the plurality of lead screws 85 to rotate, the plurality of second sliders 84 are driven to approach to the circle center of the round block 81 along with the rotation of the plurality of lead screws 85, the four second sliders 84 drive the four clamping arms 82 to approach to each other, two sides of the clamping arms 82 are respectively abutted to the lateral portions of the longitudinal rods and the transverse rods, finally, the vertical intersection of the transverse rods and the longitudinal rods can be fixed through the plurality of clamping mechanisms 8, and then the vertical intersection of the transverse rods and the longitudinal rods is welded through the welding press head 6;
after the welding head 6 finishes welding the vertical intersection of the plurality of transverse rods and the plurality of longitudinal rods, the four clamping arms 82 on each clamping mechanism 8 can be controlled to be away from each other, so that the clamped longitudinal rods and transverse rods can be loosened, then the panel 72 is driven to move downwards through the two telescopic cylinders 75, in the process of moving the panel 72 downwards, the plurality of racks 767 drive the corresponding gear one 766 to reversely rotate, the gear one 766 drives the reel 764 to reversely rotate and enable the reel 764 to scatter the wound cable 765, then the slide one 762 is far away from the panel 72 under the reset elastic force of the stretched spring 768, the slide one 762 is far away from the panel 72 simultaneously with the slide one 762, finally, the two push plates one 73 and two push plates 74 are far away from each other and are separated, the push plates one 73 and two 74 are separated from the ends of the longitudinal rods and the transverse rods, then the panel 72 drives the plurality of clamping mechanisms 8 to move downwards, and the clamping arms 71 can be easily taken off from the tops of the clamping arms from the top of the steel grids welded by the plurality of the longitudinal rods and the transverse rods after the top of the bedplate 71 is flush with the top of the bedplate 71.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a steel grating board fixed-position welding device, includes rack (1), its characterized in that: the top of rack (1) is equipped with bonding tool (6) that the triaxial removed, the top of rack (1) is installed and is gathered together subassembly (7), gather together and install a plurality of fixture (8) that are the matrix and distribute on subassembly (7), fixture (8) are through centre gripping horizontal pole and vertical pole and make horizontal pole and vertical pole perpendicular setting, gather together subassembly (7) including two push pedal one (73) and two push pedal two (74) that are the rectangle distribution, two push pedal one (73) and two push pedal two (74) crisscross distributions, two push pedal one (73) and two push pedal two (74) that are close to each other will make the tip parallel and level of a plurality of horizontal poles and a plurality of vertical poles.
2. A steel grating plate tack welding apparatus as claimed in claim 1, wherein: vertical electronic sharp module (2) are installed to the bottom of rack (1), fixed mounting has frame (3) on the slider of vertical electronic sharp module (2), fixed mounting has horizontal electronic sharp module (4) on frame (3), fixed mounting has vertical electronic sharp module (5) on the slider of horizontal electronic sharp module (4), press the slider fixed connection on bonding tool (6) and vertical electronic sharp module (5).
3. A steel grating plate tack welding apparatus as claimed in claim 1, wherein: gather together subassembly (7) including platen (71) with rack (1) fixed connection, the slidable mounting who runs through the formula on platen (71) has panel (72), a plurality of recesses that the matrix distributes are seted up at the top of panel (72), and a plurality of fixture (8) are installed respectively in the recess that corresponds, the bottom fixed mounting of platen (71) has two telescoping cylinder (75) of symmetric distribution, and the piston rod top of two telescoping cylinder (75) all with panel (72) fixed connection.
4. A steel grating plate tack welding apparatus as claimed in claim 3, wherein: eight through hole (711) that are the matrix and distribute are seted up at the top of platen (71), be equipped with drive mechanism (76) in through hole (711), drive mechanism (76) include with through hole (711) both sides inner wall fixed connection's guide arm (761), sliding sleeve is equipped with slider (762) on guide arm (761), the bottom of push pedal (73) and push pedal two (74) respectively with two slider (762) top fixed connection that correspond, sliding sleeve is equipped with spring (768) on guide arm (761), the both ends of spring (768) respectively with the inner wall of through hole (711) and slider (762) fixed connection.
5. A steel grating plate tack welding apparatus as claimed in claim 4, wherein: the traction mechanism (76) further comprises a rack (767) fixed on the side of the panel (72) and a wheel frame (763) fixed at the bottom of the bedplate (71), wherein a reel (764) is rotatably mounted on the wheel frame (763), a pull cable (765) is wound on the reel (764), two ends of the pull cable (765) are fixedly connected with the reel (764) and a first slide block (762) respectively, one end of the reel (764) extends out of the reel (764) and is fixedly provided with a first gear (766), and the first gear (766) is meshed with the rack (767).
6. A steel grating plate fixed-position welding device according to claim 5, wherein: the table plate (71) is provided with a rectangular through hole, the outer side of the panel (72) is connected with the inner wall of the rectangular through hole in a sliding mode, and the inner wall of the rectangular through hole is provided with a rectangular groove for the multiple racks (767) to pass through.
7. A steel grating plate tack welding apparatus as claimed in claim 3, wherein: fixture (8) include with panel (72) top recess fixed connection's round piece (81), the top of round piece (81) is less than the top of panel (72), slidable mounting has four arm lock (82) that are square distribution on round piece (81).
8. A steel grating plate tack welding apparatus as claimed in claim 7, wherein: offer four through hole two (83) that are square distribution on circle piece (81), rotate on the both sides inner wall of through hole two (83) and install same lead screw (85), threaded sleeve is equipped with slider two (84) on lead screw (85), slider two (84) and the both sides inner wall sliding connection of through hole two (83), and slider two (84) tops and the arm lock (82) bottom fixed connection that corresponds, circle center department of circle piece (81) has seted up circular slot (89), and the one end that a plurality of lead screws (85) are close to each other all extends to in circular slot (89), and the equal fixed mounting of one end that a plurality of lead screws (85) are close to each other has two (86) of gear, fixed mounting has motor (87) in circular slot (89), the output fixed mounting of motor (87) has terminal surface fluted disc (88), and a plurality of two (86) of gear all mesh together with terminal surface fluted disc (88).
9. A steel grating plate tack welding apparatus as claimed in claim 7, wherein: two slope surfaces (821) which are symmetrically distributed are arranged on one side of the clamping arm (82) close to the circle center of the round block (81), and a plurality of rollers (822) which are linearly distributed are installed on the slope surfaces (821) in an embedded mode in a rotating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310020733.0A CN115780991B (en) | 2023-01-07 | 2023-01-07 | Steel grating plate positioning welding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310020733.0A CN115780991B (en) | 2023-01-07 | 2023-01-07 | Steel grating plate positioning welding device |
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| CN115780991A true CN115780991A (en) | 2023-03-14 |
| CN115780991B CN115780991B (en) | 2023-04-28 |
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| CN116890194A (en) * | 2023-09-11 | 2023-10-17 | 苏州清科电气有限公司 | Switch cabinet clamping mechanism and switch cabinet welding system |
| CN116890194B (en) * | 2023-09-11 | 2023-12-12 | 苏州清科电气有限公司 | Switch cabinet clamping mechanism and switch cabinet welding system |
| CN117283183A (en) * | 2023-11-24 | 2023-12-26 | 烟台大兴钢结构有限公司 | Automatic welding machine for steel grating plate |
| CN117283183B (en) * | 2023-11-24 | 2024-02-23 | 烟台大兴钢结构有限公司 | Automatic welding machine for steel grating plate |
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| CN115780991B (en) | 2023-04-28 |
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